OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application# G. |7 U& } T8 h3 e5 @
/*$ \) @5 K" |6 ?; l
* edma_test.c' j; z" S* }/ ?
*
, I" r% m8 P6 \5 @
* brief EDMA3 Test Application3 l" D) K7 N; q% O- E! h0 g7 @
*
8 j e* f/ w' m! ^
* This file contains EDMA3 Test code.
: G! {, o8 H& L6 q
*
. b. S& S c9 m/ W' N" P2 N- K
* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE* k% G' J' e/ M' q |
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
6 m. K# k: O7 J* [' |
* TO CHANGE.8 i7 C" p* R6 n4 P, K7 c+ f
*5 `( |$ {2 `; L2 M) {# X
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
6 q. L6 s* a+ N" R/ G. i- K7 ]1 H
*
* t; M5 [5 p; a1 v9 k
* This program is free software; you can redistribute it and/or" p% s2 K- i, `3 ^
* modify it under the terms of the GNU General Public License as5 p/ _: }7 \8 C j
* published by the Free Software Foundation version 2.
6 q v9 C6 I4 Q8 ?
*/ G) k3 M' L. w N$ r& H
* This program is distributed "as is" WITHOUT ANY WARRANTY of any/ J( m, ? L7 d M# i P) R2 c
* kind, whether express or implied; without even the implied warranty s E9 x0 \& L' U- M, ~* I: o
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the! Y' l8 y/ Z4 @ o
* GNU General Public License for more details.
' m& m/ X" \- [+ q0 u
*/
- {) \8 D: [- L' r0 w: U
( n9 |& w4 X+ [. J
#include <linux/module.h>
* S; Q" ?# B& E" {4 u2 l# U
#include <linux/init.h>
8 y {+ s5 K, P8 a, {- w
#include <linux/errno.h>. w& \ A/ A3 T. w4 i3 G" P
#include <linux/types.h>9 {/ ~6 W# U: q j: D
#include <linux/interrupt.h> E1 ?& p) \2 Y. C) [# b9 ^
#include <asm/io.h>
5 @6 g* e- H5 ]/ z$ k8 @, }
#include <linux/moduleparam.h>
+ J! t# ]/ a0 o2 Y3 k7 o
#include <linux/sysctl.h>
& J+ E v' P0 n) Y% _
#include <linux/mm.h>
4 q5 \9 @5 l, j& o6 P$ g2 h7 R
#include <linux/dma-mapping.h>* S' g3 l7 r; i; I2 L9 y' G
+ R, w6 @& D/ C1 M( K* j4 M
#include <mach/memory.h>
1 X I( x% d3 N& V1 D4 D
#include <mach/hardware.h>, }- _6 D$ l- P3 b. Y
#include <mach/irqs.h>, a$ a$ |, m/ R
#include <asm/hardware/edma.h>5 q1 }+ J$ d1 i& _
& ~3 e. o) B& ^* j
#undef EDMA3_DEBUG! k, R1 u& h9 X+ U% y
/*#define EDMA3_DEBUG*/0 {1 b8 ~9 V' I) m, [! l& W, x5 i$ G/ W) d
4 W/ U5 @2 f9 p$ N- r8 }2 r! a
#ifdef EDMA3_DEBUG V- S7 e& c9 Z+ {8 S
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
/ y( _8 D7 R; e# V; q" p; L
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
4 n! s/ y- T, Q: O$ j$ m' L6 w
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
5 B% a% K% j2 d: l7 z
#else
9 l0 w# k+ e/ B1 X5 f% U6 Y
#define DMA_PRINTK( x... )
, T" j* J, Q* a! v" o" a
#define DMA_FN_IN7 Y3 l, T+ z$ R
#define DMA_FN_OUT& q3 H" h) l, F
#endif
4 N3 y' H' w6 ]" u
#define MAX_DMA_TRANSFER_IN_BYTES (32768); w9 z, O1 D3 n) } Q
#define STATIC_SHIFT 33 ?- |! I0 o- t( e, C+ t4 z
#define TCINTEN_SHIFT 20( j* m* [! d1 o) S \2 z9 G8 r# v
#define ITCINTEN_SHIFT 21/ O/ P( z* D" T; G1 |' c8 ~1 d- [, P! _
#define TCCHEN_SHIFT 22
0 p: c! U0 p1 D' ]
#define ITCCHEN_SHIFT 23
8 q& e: x8 W% m+ k9 ^& C0 u
- n/ u) K# H- Z/ Z) B+ N
static volatile int irqraised1 = 0;
: m- D) H* p& ]6 c8 p
static volatile int irqraised2 = 0;; _1 F: N2 A$ e0 Q& ?0 ]( l1 P. a$ i
9 Z+ }' f9 }9 L' B0 \5 c
int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);6 M7 R+ u( i( a# p% G& M
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
3 c. T3 |: b+ h0 a3 A5 `
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
1 K( n" s: R9 B
/ K- ]/ ]- _5 Q0 C
dma_addr_t dmaphyssrc1 = 0;
~0 ?& {3 ?& y
dma_addr_t dmaphyssrc2 = 0;& n/ H* t+ T; y/ v. V) V
dma_addr_t dmaphysdest1 = 0;
' G' w4 c: W) E
dma_addr_t dmaphysdest2 = 0;
. M5 N* D9 R, l* j p# j4 [1 ]& Y9 G
* d; {- r, ~' ~, p K+ A6 W4 O
char *dmabufsrc1 = NULL;5 a2 O G1 h# z/ H( N0 @ G
char *dmabufsrc2 = NULL;2 J P( e# M) O7 @: T: f
char *dmabufdest1 = NULL;. M. ~' A* f8 g; Z( X, p1 c
char *dmabufdest2 = NULL;
2 m0 c! l" ?4 m6 C: B
4 ~# A& S, K, r/ [2 [
static int acnt = 512;4 |; b7 d! G: S! w3 m; V
static int bcnt = 8;5 ~8 G; I+ z- s- f9 a
static int ccnt = 8;6 z' C" ~# P0 l( }9 P
8 E6 J3 ^3 G- D9 \8 b1 J
module_param(acnt, int, S_IRUGO);
; K- ~6 R0 b S, h! N, v
module_param(bcnt, int, S_IRUGO);* ^9 h: K1 o: z5 B
module_param(ccnt, int, S_IRUGO);

复制代码

   这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
   我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

		自动登录	找回密码
密码			立即注册

[未解决] OMAPL138如何在Linux下使用EDMA3驱动